On our recent trip to Oregon we walked along the docks in Astoria, right near the original Bumble Bee Tuna cannery on the Columbia River.
All of the wood on the docks, the railings and even the railroad ties look like the following. There was a mixture of old wood and new and it all looked like this:
Do the "dashes" serve a purpose? Are they perhaps marks from where preservative was injected?
If you are ever in Astoria, OR stop for a snack/meal at Coffee Girl, right inside the old cannery on Pier 39. They still serve their customers at the original counter that the Coffee Girl used to serve coffee to the cannery workers. Great food and greater coffee.
Outside the cafe, but still inside the cannery, they've created a very rustic museum highlighting the history of the cannery, with boats, cannery equipment, lots of pictures, etc. You can go into the power room and see a few different generations of the generators and other power distribution equipment. It's a pretty cool place.